> I feel like this situation would be similar with Facebook and Apple - if they manage to break Apple's monopoly, still nobody would use a 3rd party app store,

> I feel like this situation would be similar with Facebook and Apple - if they manage to break Apple's monopoly, still nobody would use a 3rd party app store, save for people forced by giants like Facebook. The Amazon app store exists for Android. And yet Google Play still commands high platform fees. As you note, Facebook is probably big enough to force people to use their 3rd party app store (and thereby avoid Apple's privacy regulations, which interfere with Facebook's business model.)